<template>
  <div class="todo-header">
    <input v-model="title" type="text" placeholder="请输入你的任务名称，按回车键确认" @keyup.enter="add"/>
  </div>
</template>

<script>
//组件用于生产唯一值
import {nanoid} from 'nanoid'

export default {
  name: "MyHeader",
  description: '',
  mixins: [],
  components: {},
  data() {
    return {
      title: ''
    }
  },
  computed: {},
  watch: {},
  filters: {},
  created() {
  },
  mounted() {
  },
  destroyed() {
  },
  methods: {
    add() {
      if(this.title===''){
        return
      }
      // 将用户的输入包装成一个todo对象
      const todoObj = {
        id: nanoid(),
        title: this.title,
        done:false
      }
      this.$emit('addTodos',todoObj)
      this.title=''
    }
  }
}
</script>

<style scoped>
/*header*/
.todo-header input {
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
}

.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
}
</style>